Window-sash lock.



. Patented Sept. 8, 1914.

WlTN ESSES ATTO R N EY NETE STES MARK NOBLE UTNAM, OF VJICHITA, KANSAS.

VINDO'W-SASH LOCK.

Specification of Letters Patent.

Fatented Sept. 8, 1914.

Application mea nay 2o, ieri. serial no. ascesa T0 all whom. it mayconcern Be it lmown thatI l, their NOBLE PUT- Narr, a citizen of theUnited States, residing at TWichita, in the county of Sedgwick and Stateof Kansas, have invented a new and useful lVindow-Sash Lock, of whichthe following` is a specification.

The invention relates to improvements in window sash locks.

The object of the present invention is to improve the construction ofwindow sash locks and to provide a simple, practical, and inexpensivewindow sash loclr of strong and durable construction, adapted to bereadily applied to a window and capable of locking the sashes either intheir closed position or in an open position for ventilation.

A further object of the invention is to provide a window sash lool; ofthis character, equipped with a pair of bolts, one of the bolts beingarranged to lock the upper and lower sashes of a window together, andthe other being movable into and outl of en gagement with the windowframe or casing, so as to loch the upper and lower sashes rigid with thesame.

Another object of the invention is to provide a sash lock adapted tolock the lower sash to the window frame or casing at any point, eitheropen or closed, while permitting an adjustment of the uppersash, andequipped with means for preventing a partial movement of the bolt whichengages the window frame or casing, so that it will be necessary torotate the lrnob of an operating bolt to the right sufliciently tocompletely shoot the bolt which loclrs the lower sash and engages suchbolt with the window frame or casing before the operating bolt can beengaged with the upper sash, thereby avoiding any liability ofaccidentally leaving the lower sash unlocked.

Vith these and other objects in view the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawing, and pointed out in the claimshereto appended, it being understood that various changes in the form,proportion, size and minor details of construction, within the scope ofthe claims, may be resorted to without departing from the spirit orsacri cing any of the advantages of the invention.

In the drawing :-Figure 1 is a front ele-- vation of a window sash lockconstructed in accordance with this invention, and shown applied to lawindow, the window frame or casing and the metallic keeper strip thereofbeing in section. Fig. 2 is a vertical sectional view talren at rightangles to Fig. l. Fig. 3 is a vertical sectional view on the line 3 3 ofFig. 1. Fig. el is a vertical sectional view on the line of Fig. 2. Fig.5 is a horizontal sectional view. Fig. 6 is a transverse sectional viewon the line 6 6 of Fig. 3. Fig. 7 is a detail perspective viev.v of thesliding and rotary operating bolt.

Like numerals of reference designate corresponding' parts in all thefigures of the drawing.

ln the` accompanying drawing, in which is illustrated the preferredembodiment of the invention, 1 designates a casing forming a housing forhorizontal bolts 2 and 8, and designed to be secured to and mounted uponthe lower sash 4l; of a window at the right hand side of the saine. rlhecasing, which may consist of a casting or be constructed in any otherdesired manner, is secured to the lower sash by vertical screws 5 and ahorizontal screw 6, but any other desired arrangement of fastening meansmay, of course, be employed. lThe vertical screws 5 pierce the casingand are embedded in the top rail of the lower sash, while the horizontalscrew passes through a depending lug or ear 7, which fits against thefront or inner face of said top rail of the lower' sash. The bolt 3,which is movable laterally of the casing 1, is mounted in a transversebore 8 thereof, while the other bolt 2 is mounted in a bore 9, whichintersects the bore 8, the bolt 2 preferably passing beneath the bolt 3.

The bore S is closed at one end by ya wall 10, which forms a stop forthe bolt 8 to limit the inward movement thereof, and the latter has alower recess 11 at its inner or rear portion. The bolt 3 is provided atthe recess with teeth 12 forming a rack and mes iing with a pinion 18,consisting of teeth or ribs extending longitudinally of the operatingbolt 2 and permitting a slid` ing movement of the latter withoutbecoming disengaged from the rack of the laterally movable bolt 3. Theoperating bolt is equipped at its front or outer end with a milled heador knob 141, and it is adapted to be rotated' to reciprocate thelaterally movable bolt 3, to engage the same with a keeper strip l andto retract it from such engagement. The keeper strip l5, which is`constructed ot suitable metal, is secured to the side of the windowl'rame or casing' 16 in the .gi-ocre or channel provided for then'lovement of the lower sash, and it is located to one si `e of thevertical transverse plane oit the sash cord, so as not to intertere withthe same when the deif'ice is applied to a window h. its sashes balancedby sash weigh The said keeper strip is provided at short intervals withopenings l?y forming sockets to be engaged by the laterally niio-yablebolt 33 whereby the lower sash is rigidly loelred to the window trame orcasing1 and held against movement in either direction. "lfhe pinion i3is de signed to be of a site so that a complete revolution of theoperating; bolt will produce a itull inoif'ement of the bolt 3, eitherto shoot or reciprocate the same.

The inner or rear portion ot the operating` bolt is arranged in a rearbore or openingv 18, and the said bolt is slidable inwardly andoutwardly to engage its rear end with and disengage it from a leeperstrip i9, secured to the inner or front lace ot the right hand side baror stile ot the upper sash of the window. The lreeper strip 19, which isprovided at intervals with socket openings 2l to receive the operatingbolt, may be oll any desired length to se cure the requisite adjustmentof the upper sash. ln orde to prevent the operating bolt from beingreciproeated when the laterally movable bolt is in an intermediateposition7 the said operatingl bolt is provided near its inner or rearend with an annular groove 22 in which operates a l'iXed projec tion 23,Drelierably 'formed by a pin piercing' the top of `the casing andei'ending into the portion 22 et the bore which receives the operatingbolt. The operating bolt is provided with a eut away portion 25 forminga Vflat tace and located at the said projection when the laterallymovable bolt is at the limit ot its moyement in an outward direction.The cut away portion Q5 ot the operatingl bolt 2 permits the latter tobe moved inwardly or rearwardly into engagement with the keeper strip ofthe upper sash, as illustrated in Fig. 3 of the drawings. its theopermting,- bolt 2 must make a complete revolution in one direction toturn the eut away portion to a position opposite the projection it willbe impossible to slide the operating bolt 2 until the said laterallymovable bolt 3 has been completely moved to its engagine' position intothe keeper strip l5.

When the bolts are in the position illus trated in Fig'. ott thedrawing, the oper ating` bolt, after the lower has been adjusted to thedesired position, is rotated to the right to carry the laterally movableor cL` ng. 'lfhe upper sash is then tree to more and may7 alteradjustment., be locked to the lower sash and to the window trame orcasing by sliding` the operating bolt 2 rearwardly and engaging the samewith one oit the soclret openings 2l olf the said upper s The lower sashmust be first locked to the window frame or casinsoT before lool-ing`the upper and lower sashes together, thereby insuring the locking oitthe lower sash at all times at the desired point, as it is necessary torotate the knob let to the riejht and Atorce the bolt tl into engagementth the keeper strip l5 before the bolt 2 an be pushed rearwardly intoengagement with the lreeoer strip il) ol the upper sash. t will beimpossible to manipulate the sash .ook from the exterior by means of aknife, wire, or other instrument, and surreptitiously open a window,whether the sashes be closed, or partly open for ventilation. 'lfheposition of the sash lock at the right hand side oit the window enablesit to be manipulated with the right hand while adjusting; the sasheswith. the left hand, and as it is springless and comprises in itsconstruction only two working parts, it presents a. strong',` anddurable constructiom and is not liable to get out of order.

The device is applicable to various kinds ot windows7 whether equippedwith sash weights or not, and instead ot providing lreeper strips, asshown in the drawing, separate rings or socket pieces may be mounted theupper sash and on the window trame or easing' in position to be engagedby the bolts o1 the sash lock.

lllhat is claimed is l. A s; sh loci; comprising` a casing having`horizontal bores or openings intersee'ting,- each other, a laterallymovable slidable bolt nounted in one of the bores or openings andprovided with a raolr, an operatingbolt mounted for slidingand rotarymovement in the other bore and provided with a, pin ion meshing with theraclr of the laterally movable bolt, and a lined projection engagingw'th the operating` bolt to lool; the same against sliding.;` movementwhile the same is beingI rotated to actuate the laterally movable bolt,said operating bolt having a out away portion eng/aging the saidprojection and permitting a sliding; movement of the operating; boltwhen the laterally movable bolt is at 'he limit oli its movement in anoutward direction,

2. it sash loolr comprising a casing havbores or openings intersecting'each other. a laterally movable slidable bolt moi ed in one ot the boresor openings and provided with a rack7 an opi-Eatingbolt mounted torsliding and rotary movement in the other bore or opening and providedwith a pinion meshing with the rack of the laterally movable bolt, andmeans ooacting With the operating bolt for locking the same againstsliding movement until the said operating bolt, through its rotation,has carried the laterally movable bolt Completely to the engagingposition thereof, said means permitting a sliding movement of theoperating bolt when the laterally movable bolt is in the said engagingposition.

3. A sash lock comprising a casing having bores or openings intersectingeach other, a laterally movable slidable bolt mounted in one of thebores or openings and provided with a rack, an operating bolt mountedfor sliding and rotary movement in the other bore or opening andprovided with a pinion meshing With the laterally movable bolt, andmeans Coacting With the operating bolt for looking the same againstsliding movement While it is being rotated to aotuate the laterallymovable bolt.

In testimony that I claim the foregoing as my own, I have hereto aiiixedmy signature in the presence of two Witnesses.

MARK NOBLE IUTNAM. wWitnesses:

F. O. DoRT, Jos. B. I-IEssE.

Copies of this paient may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. G.

